Depends on the level of 'incorrect'. If it's only the make, or the oil weight, then possibly no big deal. - You should have told us what the incorrect fluid is !
Mopar® Manual Transmission Lubricant is recommended or equivalent for use in the manual transmissions
a manual transmission does not have transmission fluid. It has thich gear grease. when you take the transmission pan off. do it slowly, and allow one corner of it to lower first allowing the thick grease that has broken down over time to run out into a catch pan.
Your mustang with a manual transmission takes automatic transmission fluid. the capacity is 5.6 Pts (US). The fill plug is located on the side of the transmission. Macs Transmissions 281-394-4951 Macstransmissions@gmail.com
Flywheel
transmission stop engaging, after fuel stop, why
* NV1500 - Mopar® Manual Transmission Lubricant * NV3550 - Mopar® Manual Transmission Lubricant
There is a plug on the side of the transmission for checking/adding lubricant. When adding lubricant, use a syringe or squeeze bottle.
Mopar® Manual Transmission Lubricant is recommended or equivalent for use in the manual transmissions
A 1991 Chevy Camaro with a manual transmission needs Dexron II ATF fluid. It provides lubricant and cooling to the transmission.
Under the vehicle, on the side of the transmission, there should be a plug that you can remove to chek/add lubricant. You should be able to stick in your fingertip to feel for lubricant. If lubricant is needed, you will need a siphon-type pump to transfer the lubricant from the container to the transmission. When the transmission reaches the level of the hole and starts to leak out, the transmission is full.
Required lubricant for the NV4500 is Mopar Manual Transmission Lubricant, P/N 4637579. This is the only lubricant recommended for use. Dry fill lubricant capacity is approximately 3.78 liters (8 pints) Correct lubricant fill level is to the bottom edge of the fill plug hole Check fill level only when the transmission is level.
Manual transmissions use a variety of oils: regular motor oil, heavyweight hypoid gear oil or even automatic transmission fluid in some cases. Your owner's manual will tell you what your transmission calls for. If you don't have an owner's manual, either get one or call your local Ford dealer for the proper lubricant. Using the wrong lubricant can cause serious damage to the transmission.
Auto Mopar ATF+4 Manual Mopar Manual Transmission Lubricant, P/N 4874459
Manual transmission lubricant type: MERCON autmatic transmission fluid - Haynes Manual #36071, 1993-2005 Ford Ranger Pick-ups.
Always use syncromesh fluid from the dealer.
gear oil
Every 12,000 miles or 12 months, whichever comes first: Check/replenish the manual transmission lubricant. - Haynes Manual #36071